// Emacs style mode select   -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// DESCRIPTION:
//      Refresh module, BSP traversal and handling.
//
//-----------------------------------------------------------------------------

#ifndef __R_BSP__
#define __R_BSP__

extern seg_t*           curline;
extern side_t*          sidedef;
extern line_t*          linedef;
extern sector_t*        frontsector;
extern sector_t*        backsector;

extern int              rw_x;
extern int              rw_stopx;

extern boolean          segtextured;

// false if the back side is the same plane
extern boolean          markfloor;
extern boolean          markceiling;

extern boolean          skymap;

extern drawseg_t        drawsegs[MAXDRAWSEGS];
extern drawseg_t*       ds_p;

extern lighttable_t**   hscalelight;
extern lighttable_t**   vscalelight;
extern lighttable_t**   dscalelight;

typedef void (*drawfunc_t) (int start, int stop);

// BSP?
void R_ClearClipSegs (void);
void R_ClearDrawSegs (void);

void R_RenderBSPNode (int bspnum);

#endif  // __R_BSP__
